Re: q: faster way to integrate/merge lots of topic branches?

[Andreas Ericsson <ae@op5.se>]

Ingo Molnar wrote:
> I've got the following, possibly stupid question: is there a way to 
> merge a healthy number of topic branches into the master branch in a 
> quicker way, when most of the branches are already merged up?
> 
> Right now i've got something like this scripted up:
> 
>   for B in $(git-branch | cut -c3- ); do git-merge $B; done 
> 
> It takes a lot of time to run on even a 3.45GHz box:
> 
>   real    0m53.228s
>   user    0m41.134s
>   sys     0m11.405s
> 
> I just had a workflow incident where i forgot that this script was 
> running in one window (53 seconds are a _long_ time to start doing some 
> other stuff :-), i switched branches and the script merrily chugged away 
> merging branches into a topic branch i did not intend.
> 
> It iterates over 140 branches - but all of them are already merged up.
> 

With the builtin merge (which is in next), this should be doable with
an octopus merge, which will eliminate the branches that are already
fully merged, resulting in a less-than-140-way merge (thank gods...).
It also doesn't have the 24-way cap that the scripted version suffers
from.

If it does a good job at your rather extreme use-case, I'd say it's
good enough for 'master' pretty soon :-)

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231